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How to customize the background color of a UITableViewCell?
...s displayed. This method
gives the delegate a chance to
override state-based properties set
earlier by the table view, such as
selection and background color. After
the delegate returns, the table view
sets only the alpha and frame
properties, and then only when
animating rows as the...
Multiline syntax for piping a heredoc; is this portable?
...
Hi, check this, for example
#!/bin/sh
( base32 -d | base64 -d )<<ENDOFTEXT
KNDWW42DNNSHS5ZXPJCG4MSVM5MVQVT2JFCTK3DELBFDCY2IIJYGE2JUJNHWS22LINVHQMCMNVFD
CWJQIIZVUV2JOVNEOVJLINTW6PIK
ENDOFTEXT
regards
...
Specify JDK for Maven to use
...ble. For example (in bash shell): JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/ mvn -Dmaven.compiler.fork=true -Dmaven.compiler.executable=/usr/lib/jvm/java-8-openjdk-amd64/bin/javac spring-boot:run
– Enrique S. Filiage
Mar 31 at 19:02
...
How to initialize all members of an array to the same value?
...VAL_16X VAL_8X, VAL_8X
#define VAL_32X VAL_16X, VAL_16X
#define VAL_64X VAL_32X, VAL_32X
int myArray[53] = { VAL_32X, VAL_16X, VAL_4X, VAL_1X };
If you need to change the value, you have to do the replacement at only one place.
Edit: possible useful extensions
(courtesy of Jonathan Le...
Best way to convert an ArrayList to a string
...om the above program:
61: new #13; //class java/lang/StringBuilder
64: dup
65: invokespecial #14; //Method java/lang/StringBuilder."<init>":()V
68: aload_2
69: invokevirtual #15; //Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
7...
Split comma-separated strings in a column into separate rows
... is the fastest1.
The benchmarked solutions include
Matthew Lundberg's base R approach but modified according to Rich Scriven's comment,
Jaap's two data.table methods and two dplyr / tidyr approaches,
Ananda's splitstackshapesolution,
and two additional variants of Jaap's data.table methods.
...
How to retrieve an element from a set without removing it?
...lutions suggested above – including:
list(s)[0], John's novel sequence-based solution.
random.sample(s, 1), dF.'s eclectic RNG-based solution.
Code Snippets for Great Joy
Turn on, tune in, time it:
from timeit import Timer
stats = [
"for i in range(1000): \n\tfor x in s: \n\t\tbreak",
...
How do I calculate percentiles with python/numpy?
...6, 1.92, 1.98, 2.04, 2.1, 2.16, 2.22, 2.28, 2.34, 2.4, 2.46, 2.52, 2.58, 2.64, 2.7, 2.76, 2.82, 2.88, 2.94, 3.0, 3.06, 3.12, 3.18, 3.24, 3.3, 3.36, 3.42, 3.48, 3.54, 3.6, 3.66, 3.72, 3.78, 3.84, 3.9, 3.96, 4.02, 4.08, 4.14, 4.2, 4.26, 4.32, 4.38, 4.44, 4.5, 4.56, 4.62, 4.68, 4.74, 4.8, 4.86, 4.92, 4...
What is the optimal length for user password salt? [closed]
...nly need to be long enough so that each user's salt will be unique. Random 64-bit salts are very unlikely to ever repeat even with a billion registered users, so this should be fine. A singly repeated salt is a relatively minor security concern, it allows an attacker to search two accounts at once b...
Why use AJAX when WebSockets is available?
... existing ecosystem of tools, technologies, security mechanisms, knowledge bases (i.e. far more people on stackoverflow know HTTP/Ajax/Comet than WebSockets), etc.
On the other hand, if you are creating a new application that just doesn't work well within the latency and connection constraints of H...